This file is indexed.

/usr/share/php/HTTP/Request2/CookieJar.php is in php-http-request2 2.3.0-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
<?php
/**
 * Stores cookies and passes them between HTTP requests
 *
 * PHP version 5
 *
 * LICENSE
 *
 * This source file is subject to BSD 3-Clause License that is bundled
 * with this package in the file LICENSE and available at the URL
 * https://raw.github.com/pear/HTTP_Request2/trunk/docs/LICENSE
 *
 * @category  HTTP
 * @package   HTTP_Request2
 * @author    Alexey Borzov <avb@php.net>
 * @copyright 2008-2016 Alexey Borzov <avb@php.net>
 * @license   http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
 * @link      http://pear.php.net/package/HTTP_Request2
 */

/** Class representing a HTTP request message */
require_once 'HTTP/Request2.php';

/**
 * Stores cookies and passes them between HTTP requests
 *
 * @category HTTP
 * @package  HTTP_Request2
 * @author   Alexey Borzov <avb@php.net>
 * @license  http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
 * @version  Release: 2.3.0
 * @link     http://pear.php.net/package/HTTP_Request2
 */
class HTTP_Request2_CookieJar implements Serializable
{
    /**
     * Array of stored cookies
     *
     * The array is indexed by domain, path and cookie name
     *   .example.com
     *     /
     *       some_cookie => cookie data
     *     /subdir
     *       other_cookie => cookie data
     *   .example.org
     *     ...
     *
     * @var array
     */
    protected $cookies = array();

    /**
     * Whether session cookies should be serialized when serializing the jar
     * @var bool
     */
    protected $serializeSession = false;

    /**
     * Whether Public Suffix List should be used for domain matching
     * @var bool
     */
    protected $useList = true;

    /**
     * Whether an attempt to store an invalid cookie should be ignored, rather than cause an Exception
     * @var bool
     */
    protected $ignoreInvalid = false;

    /**
     * Array with Public Suffix List data
     * @var  array
     * @link http://publicsuffix.org/
     */
    protected static $psl = array();

    /**
     * Class constructor, sets various options
     *
     * @param bool $serializeSessionCookies Controls serializing session cookies,
     *                                      see {@link serializeSessionCookies()}
     * @param bool $usePublicSuffixList     Controls using Public Suffix List,
     *                                      see {@link usePublicSuffixList()}
     * @param bool $ignoreInvalidCookies    Whether invalid cookies should be ignored,
     *                                      see {@link ignoreInvalidCookies()}
     */
    public function __construct(
        $serializeSessionCookies = false, $usePublicSuffixList = true,
        $ignoreInvalidCookies = false
    ) {
        $this->serializeSessionCookies($serializeSessionCookies);
        $this->usePublicSuffixList($usePublicSuffixList);
        $this->ignoreInvalidCookies($ignoreInvalidCookies);
    }

    /**
     * Returns current time formatted in ISO-8601 at UTC timezone
     *
     * @return string
     */
    protected function now()
    {
        $dt = new DateTime();
        $dt->setTimezone(new DateTimeZone('UTC'));
        return $dt->format(DateTime::ISO8601);
    }

    /**
     * Checks cookie array for correctness, possibly updating its 'domain', 'path' and 'expires' fields
     *
     * The checks are as follows:
     *   - cookie array should contain 'name' and 'value' fields;
     *   - name and value should not contain disallowed symbols;
     *   - 'expires' should be either empty parseable by DateTime;
     *   - 'domain' and 'path' should be either not empty or an URL where
     *     cookie was set should be provided.
     *   - if $setter is provided, then document at that URL should be allowed
     *     to set a cookie for that 'domain'. If $setter is not provided,
     *     then no domain checks will be made.
     *
     * 'expires' field will be converted to ISO8601 format from COOKIE format,
     * 'domain' and 'path' will be set from setter URL if empty.
     *
     * @param array    $cookie cookie data, as returned by
     *                         {@link HTTP_Request2_Response::getCookies()}
     * @param Net_URL2 $setter URL of the document that sent Set-Cookie header
     *
     * @return   array    Updated cookie array
     * @throws   HTTP_Request2_LogicException
     * @throws   HTTP_Request2_MessageException
     */
    protected function checkAndUpdateFields(array $cookie, Net_URL2 $setter = null)
    {
        if ($missing = array_diff(array('name', 'value'), array_keys($cookie))) {
            throw new HTTP_Request2_LogicException(
                "Cookie array should contain 'name' and 'value' fields",
                HTTP_Request2_Exception::MISSING_VALUE
            );
        }
        if (preg_match(HTTP_Request2::REGEXP_INVALID_COOKIE, $cookie['name'])) {
            throw new HTTP_Request2_LogicException(
                "Invalid cookie name: '{$cookie['name']}'",
                HTTP_Request2_Exception::INVALID_ARGUMENT
            );
        }
        if (preg_match(HTTP_Request2::REGEXP_INVALID_COOKIE, $cookie['value'])) {
            throw new HTTP_Request2_LogicException(
                "Invalid cookie value: '{$cookie['value']}'",
                HTTP_Request2_Exception::INVALID_ARGUMENT
            );
        }
        $cookie += array('domain' => '', 'path' => '', 'expires' => null, 'secure' => false);

        // Need ISO-8601 date @ UTC timezone
        if (!empty($cookie['expires'])
            && !preg_match('/^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\+0000$/', $cookie['expires'])
        ) {
            try {
                $dt = new DateTime($cookie['expires']);
                $dt->setTimezone(new DateTimeZone('UTC'));
                $cookie['expires'] = $dt->format(DateTime::ISO8601);
            } catch (Exception $e) {
                throw new HTTP_Request2_LogicException($e->getMessage());
            }
        }

        if (empty($cookie['domain']) || empty($cookie['path'])) {
            if (!$setter) {
                throw new HTTP_Request2_LogicException(
                    'Cookie misses domain and/or path component, cookie setter URL needed',
                    HTTP_Request2_Exception::MISSING_VALUE
                );
            }
            if (empty($cookie['domain'])) {
                if ($host = $setter->getHost()) {
                    $cookie['domain'] = $host;
                } else {
                    throw new HTTP_Request2_LogicException(
                        'Setter URL does not contain host part, can\'t set cookie domain',
                        HTTP_Request2_Exception::MISSING_VALUE
                    );
                }
            }
            if (empty($cookie['path'])) {
                $path = $setter->getPath();
                $cookie['path'] = empty($path)? '/': substr($path, 0, strrpos($path, '/') + 1);
            }
        }

        if ($setter && !$this->domainMatch($setter->getHost(), $cookie['domain'])) {
            throw new HTTP_Request2_MessageException(
                "Domain " . $setter->getHost() . " cannot set cookies for "
                . $cookie['domain']
            );
        }

        return $cookie;
    }

    /**
     * Stores a cookie in the jar
     *
     * @param array    $cookie cookie data, as returned by
     *                         {@link HTTP_Request2_Response::getCookies()}
     * @param Net_URL2 $setter URL of the document that sent Set-Cookie header
     *
     * @return bool whether the cookie was successfully stored
     * @throws HTTP_Request2_Exception
     */
    public function store(array $cookie, Net_URL2 $setter = null)
    {
        try {
            $cookie = $this->checkAndUpdateFields($cookie, $setter);
        } catch (HTTP_Request2_Exception $e) {
            if ($this->ignoreInvalid) {
                return false;
            } else {
                throw $e;
            }
        }

        if (strlen($cookie['value'])
            && (is_null($cookie['expires']) || $cookie['expires'] > $this->now())
        ) {
            if (!isset($this->cookies[$cookie['domain']])) {
                $this->cookies[$cookie['domain']] = array();
            }
            if (!isset($this->cookies[$cookie['domain']][$cookie['path']])) {
                $this->cookies[$cookie['domain']][$cookie['path']] = array();
            }
            $this->cookies[$cookie['domain']][$cookie['path']][$cookie['name']] = $cookie;

        } elseif (isset($this->cookies[$cookie['domain']][$cookie['path']][$cookie['name']])) {
            unset($this->cookies[$cookie['domain']][$cookie['path']][$cookie['name']]);
        }

        return true;
    }

    /**
     * Adds cookies set in HTTP response to the jar
     *
     * @param HTTP_Request2_Response $response HTTP response message
     * @param Net_URL2               $setter   original request URL, needed for
     *                               setting default domain/path. If not given,
     *                               effective URL from response will be used.
     *
     * @return bool whether all cookies were successfully stored
     * @throws HTTP_Request2_LogicException
     */
    public function addCookiesFromResponse(HTTP_Request2_Response $response, Net_URL2 $setter = null)
    {
        if (null === $setter) {
            if (!($effectiveUrl = $response->getEffectiveUrl())) {
                throw new HTTP_Request2_LogicException(
                    'Response URL required for adding cookies from response',
                    HTTP_Request2_Exception::MISSING_VALUE
                );
            }
            $setter = new Net_URL2($effectiveUrl);
        }

        $success = true;
        foreach ($response->getCookies() as $cookie) {
            $success = $this->store($cookie, $setter) && $success;
        }
        return $success;
    }

    /**
     * Returns all cookies matching a given request URL
     *
     * The following checks are made:
     *   - cookie domain should match request host
     *   - cookie path should be a prefix for request path
     *   - 'secure' cookies will only be sent for HTTPS requests
     *
     * @param Net_URL2 $url      Request url
     * @param bool     $asString Whether to return cookies as string for "Cookie: " header
     *
     * @return array|string Matching cookies
     */
    public function getMatching(Net_URL2 $url, $asString = false)
    {
        $host   = $url->getHost();
        $path   = $url->getPath();
        $secure = 0 == strcasecmp($url->getScheme(), 'https');

        $matched = $ret = array();
        foreach (array_keys($this->cookies) as $domain) {
            if ($this->domainMatch($host, $domain)) {
                foreach (array_keys($this->cookies[$domain]) as $cPath) {
                    if (0 === strpos($path, $cPath)) {
                        foreach ($this->cookies[$domain][$cPath] as $name => $cookie) {
                            if (!$cookie['secure'] || $secure) {
                                $matched[$name][strlen($cookie['path'])] = $cookie;
                            }
                        }
                    }
                }
            }
        }
        foreach ($matched as $cookies) {
            krsort($cookies);
            $ret = array_merge($ret, $cookies);
        }
        if (!$asString) {
            return $ret;
        } else {
            $str = '';
            foreach ($ret as $c) {
                $str .= (empty($str)? '': '; ') . $c['name'] . '=' . $c['value'];
            }
            return $str;
        }
    }

    /**
     * Returns all cookies stored in a jar
     *
     * @return array
     */
    public function getAll()
    {
        $cookies = array();
        foreach (array_keys($this->cookies) as $domain) {
            foreach (array_keys($this->cookies[$domain]) as $path) {
                foreach ($this->cookies[$domain][$path] as $name => $cookie) {
                    $cookies[] = $cookie;
                }
            }
        }
        return $cookies;
    }

    /**
     * Sets whether session cookies should be serialized when serializing the jar
     *
     * @param boolean $serialize serialize?
     */
    public function serializeSessionCookies($serialize)
    {
        $this->serializeSession = (bool)$serialize;
    }

    /**
     * Sets whether invalid cookies should be silently ignored or cause an Exception
     *
     * @param boolean $ignore ignore?
     * @link http://pear.php.net/bugs/bug.php?id=19937
     * @link http://pear.php.net/bugs/bug.php?id=20401
     */
    public function ignoreInvalidCookies($ignore)
    {
        $this->ignoreInvalid = (bool)$ignore;
    }

    /**
     * Sets whether Public Suffix List should be used for restricting cookie-setting
     *
     * Without PSL {@link domainMatch()} will only prevent setting cookies for
     * top-level domains like '.com' or '.org'. However, it will not prevent
     * setting a cookie for '.co.uk' even though only third-level registrations
     * are possible in .uk domain.
     *
     * With the List it is possible to find the highest level at which a domain
     * may be registered for a particular top-level domain and consequently
     * prevent cookies set for '.co.uk' or '.msk.ru'. The same list is used by
     * Firefox, Chrome and Opera browsers to restrict cookie setting.
     *
     * Note that PSL is licensed differently to HTTP_Request2 package (refer to
     * the license information in public-suffix-list.php), so you can disable
     * its use if this is an issue for you.
     *
     * @param boolean $useList use the list?
     *
     * @link     http://publicsuffix.org/learn/
     */
    public function usePublicSuffixList($useList)
    {
        $this->useList = (bool)$useList;
    }

    /**
     * Returns string representation of object
     *
     * @return string
     *
     * @see    Serializable::serialize()
     */
    public function serialize()
    {
        $cookies = $this->getAll();
        if (!$this->serializeSession) {
            for ($i = count($cookies) - 1; $i >= 0; $i--) {
                if (empty($cookies[$i]['expires'])) {
                    unset($cookies[$i]);
                }
            }
        }
        return serialize(array(
            'cookies'          => $cookies,
            'serializeSession' => $this->serializeSession,
            'useList'          => $this->useList,
            'ignoreInvalid'    => $this->ignoreInvalid
        ));
    }

    /**
     * Constructs the object from serialized string
     *
     * @param string $serialized string representation
     *
     * @see   Serializable::unserialize()
     */
    public function unserialize($serialized)
    {
        $data = unserialize($serialized);
        $now  = $this->now();
        $this->serializeSessionCookies($data['serializeSession']);
        $this->usePublicSuffixList($data['useList']);
        if (array_key_exists('ignoreInvalid', $data)) {
            $this->ignoreInvalidCookies($data['ignoreInvalid']);
        }
        foreach ($data['cookies'] as $cookie) {
            if (!empty($cookie['expires']) && $cookie['expires'] <= $now) {
                continue;
            }
            if (!isset($this->cookies[$cookie['domain']])) {
                $this->cookies[$cookie['domain']] = array();
            }
            if (!isset($this->cookies[$cookie['domain']][$cookie['path']])) {
                $this->cookies[$cookie['domain']][$cookie['path']] = array();
            }
            $this->cookies[$cookie['domain']][$cookie['path']][$cookie['name']] = $cookie;
        }
    }

    /**
     * Checks whether a cookie domain matches a request host.
     *
     * The method is used by {@link store()} to check for whether a document
     * at given URL can set a cookie with a given domain attribute and by
     * {@link getMatching()} to find cookies matching the request URL.
     *
     * @param string $requestHost  request host
     * @param string $cookieDomain cookie domain
     *
     * @return   bool    match success
     */
    public function domainMatch($requestHost, $cookieDomain)
    {
        if ($requestHost == $cookieDomain) {
            return true;
        }
        // IP address, we require exact match
        if (preg_match('/^(?:\d{1,3}\.){3}\d{1,3}$/', $requestHost)) {
            return false;
        }
        if ('.' != $cookieDomain[0]) {
            $cookieDomain = '.' . $cookieDomain;
        }
        // prevents setting cookies for '.com' and similar domains
        if (!$this->useList && substr_count($cookieDomain, '.') < 2
            || $this->useList && !self::getRegisteredDomain($cookieDomain)
        ) {
            return false;
        }
        return substr('.' . $requestHost, -strlen($cookieDomain)) == $cookieDomain;
    }

    /**
     * Removes subdomains to get the registered domain (the first after top-level)
     *
     * The method will check Public Suffix List to find out where top-level
     * domain ends and registered domain starts. It will remove domain parts
     * to the left of registered one.
     *
     * @param string $domain domain name
     *
     * @return string|bool   registered domain, will return false if $domain is
     *                       either invalid or a TLD itself
     */
    public static function getRegisteredDomain($domain)
    {
        $domainParts = explode('.', ltrim($domain, '.'));

        // load the list if needed
        if (empty(self::$psl)) {
            $path = '/usr/share/php/data' . DIRECTORY_SEPARATOR . 'HTTP_Request2';
            if (0 === strpos($path, '@' . 'data_dir@')) {
                $path = realpath(
                    dirname(__FILE__) . DIRECTORY_SEPARATOR . '..'
                    . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'data'
                );
            }
            self::$psl = include_once $path . DIRECTORY_SEPARATOR . 'public-suffix-list.php';
        }

        if (!($result = self::checkDomainsList($domainParts, self::$psl))) {
            // known TLD, invalid domain name
            return false;
        }

        // unknown TLD
        if (!strpos($result, '.')) {
            // fallback to checking that domain "has at least two dots"
            if (2 > ($count = count($domainParts))) {
                return false;
            }
            return $domainParts[$count - 2] . '.' . $domainParts[$count - 1];
        }
        return $result;
    }

    /**
     * Recursive helper method for {@link getRegisteredDomain()}
     *
     * @param array $domainParts remaining domain parts
     * @param mixed $listNode    node in {@link HTTP_Request2_CookieJar::$psl} to check
     *
     * @return string|null   concatenated domain parts, null in case of error
     */
    protected static function checkDomainsList(array $domainParts, $listNode)
    {
        $sub    = array_pop($domainParts);
        $result = null;

        if (!is_array($listNode) || is_null($sub)
            || array_key_exists('!' . $sub, $listNode)
        ) {
            return $sub;

        } elseif (array_key_exists($sub, $listNode)) {
            $result = self::checkDomainsList($domainParts, $listNode[$sub]);

        } elseif (array_key_exists('*', $listNode)) {
            $result = self::checkDomainsList($domainParts, $listNode['*']);

        } else {
            return $sub;
        }

        return (strlen($result) > 0) ? ($result . '.' . $sub) : null;
    }
}
?>